Sash-fastener



N0. 62|,578l vPafned Mal". 2|, |899. G. C. LOCKLIN &. B. M. FDX.

SASH FASTENER.

(Application mea .my 21, 1897.)

(No Model.)

I UNITED STATES? PATENT irri-cn.

GEORGE O. LOCKLIN AND BONI-IAM M. FOX, OF OHIOAGO, ILLINOIS.

SASH-FASTEN ER.

SPECIFICATION forming part of Letters Patent No. 621,578,V dated March21, 18,99.

Application led July 21, l897.

T0 all whom, it may concern:

Be it known that we, GEORGE O. LocKLIN.

and BONHAM M. FOX, citizens of the United States, and residents ofOhicago,Cook county, v

Illinois, have invented certain new and useful Improvements inWindow-Locks,of which the following is a full, clear, and exactdescription, reference being had tothe accompany= ing drawings and tothe letters of reference marked thereon.

The object of our invention is to provide a simply-constructed lockingdevice for windows which is so constructed and so located that it cannotbe unlocked from-the outside without breaking the window, yet can be soadjusted as to permit the upper sash to be lowered for ventilation. Thiswe accomplish by means of a prop-bar or brace the lower end of which isso pivoted to the lower sash that it can tilt toward and its upper endengage a rack on the side of the upper sash, substantially ashereinafter fully described and as illustrated in the drawings, inwhich;-

Figure 1 is a perspective view of said locking device, showing themanner of its application. Fig. '2 is a side edge view thereof. Fig. 3-is a vertical transverse section through the same. Fig. 4 is aperspective view of the lugs between which the lower end of locking baror brace is pivoted, and Fig. 5 is a detail View showin g the springemployed in said locking device in perspective.

In the drawings, A represents a saw-toothed rack, the inclined sides ofwhose teeth are uppermost. This rack is secured to the inner surface of,preferably, the right-hand vertical side of the upper sash of the windowat a suitable point above the lower sash when the window is closed bymeans of screws passed through the count'ersunk screw-holes in itsends.Y

lB represents a brace or bar consisting of a iiat piece or strip ofmetal the lower end of which is pivoted between the supporting-lu gs Cand D. Lug O arises from and is made integrant with a screw-plate d,which is fastened to the top rail of the lower sash, near the righthandend thereof, so as to be in the same transverse vertical plane as therack A, and lug D is made separate from lug C, but its base rests SerialNo. 645,347. (No model.)

' Aon `the screw-plate thereof, and it is held to lug C by the pivotalpin or rivet b. The body of these lugs are preferably of a circularform, and lug C has its edges provided with an angular fiange projectingtoward lug D, about one-half of which is cut away to form when the -lugsare secured together a segmental slot dbetween them to accommodate theoscillatory movement of the brace-bar B. n

The inner surface of lug O or that facing lug D is depressed below theopening through which rivet b passes, so as to form a seat e for thelower end of the brace-bar when the said bar is in a vertical position.Directly opposite this seat e, in a horizontal recess f made in theadjacent surface of the lug D, is a bow-shaped spring E, the Aconvexside of which normally presses against the lower end of bar B and whenthe latter is in a vertical position pushes it into seat E. When this isdone, the upper end of the bar tilts in the opposite direction, and topermit of this the inner face of lug D, above the rivet, is

channeled, as shown, to form a groove g, intothat its upper end canengage the rack, thepivotal opening 7c of said bar is elongated slightlyin the direction of length of said bar. Were this not done it would bindand be inoperative.

The operation of our invention is as follows, the rack being secured tothe upper sash of the window in the manner indicated and the lugs inwhich the bar B is secured to the upper rail of the lower sash being insuch position that when the bar is moved to the vertical position thepressure of spring 7c causes it to tilt toward and engage rack A: Vhenin this position, the bar B cannot be swung back IOO i it to or towardthe horizontal position into the segmental slot d, whereby it will bekept out of engagement with said rack.

What we claim as newisp 1. rlhe combination withhthe upper sash of awindow, and a vertically-arranged rack secured to the side thereof nearthe lower end, of a lower sash, an oscillatory brace-bar, having anelongated pivot-opening therein, lug C having a recess or seat e in itsinner surface below the pivotal point of the said bar and having anannular flange projecting iny ward toward lug D one-half of which is cutaway to forma slot d in which said bar moves, said lug D having thegroove g therein, and rivet b securing said lugs together and ful--cruming said bar as set forth. 2. The combination with the upper sash ofthe Window and a vertically-arranged rack sei cured to the side thereofnear the lower end,

of a lower sash, an oscillatory brace-bar having an elongatedpivot-opening therein, a lug C secured to the top rail of said lowersash having a recess or seat e in its inner surface below the pivotalpoint of said bar, and provided with an annular flange projecting towardlug C one-half of which is out away to form a slot cl in which said barmoves, said lug D having a groove g in its inner surface above thepivotal point of said bar, and a hori- 4 zontal recess f below the same,and a spring E seated in said recess and normally pressing against thelower end of said bar, as and for the purpose set forth.

GEORGE C. LOCKLIN. BONI-IAM M. FOX.

Witnesses:

P. L. EtfANs, FRANK D. TrroMAsoN.

